Mark Aron Szulyovszky
Reputation: 313
Slower operations on Array<SomeStruct> than on Array<SomeClass>... Why?
I did some comparison here: https://github.com/itchingpixels/structs-vs-classes and it seems like inserting a struct into an array of structs is 10x slower than inserting a class to an array of classes (with the same data).
Is something wrong with my tests?
What could be the reason of this? or.. is this expected?
Upvotes: 1
Views: 53
Answers (1)
BaseZen
Reputation: 8718
Expected. Classes use references (4-8 byte memory addresses); structs are value types so the entire struct must be inlined. Try with a tiny struct versus one that's hundreds of bytes in size. Try inserting at the end of an array versus the beginning.
Upvotes: 2
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